Fever suggests that there is an infection in the child’s body. Two-year-old babies have fever every month suggesting a low immunity and a high chance of infection, so they need to go to the hospital for a basic examination to clarify the cause of low immunity. If your baby’s low immunity is caused by a lack of certain trace elements and vitamins, you can give the appropriate supplement, and if there is anemia, malnutrition, rickets and other primary diseases, you can give causal treatment to correct the primary disease will make the immunity improve. In addition, you can give oral medication to improve immunity, such as transfer factor, spleen aminopeptide, Sophora yellow granules, etc. At the same time, we should pay attention to balanced nutrition, avoid picky and partial food, and also strengthen physical exercise, keep indoor air circulation, less contact with infected children to avoid cross-infection.